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What gain guiding and index guiding mean in the context of lasers?

  1. May 1, 2010 #1
    Does anyone know what gain guiding and index guiding mean in the context of lasers?
     
  2. jcsd
  3. May 1, 2010 #2

    Redbelly98

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    Re: Lasers

    I've only heard this in reference to diode lasers.

    In gain guiding, the optical cavity is constrained to be where the current density is sufficient to have population inversion (i.e. to have gain rather than absorption).

    In index guiding, a difference in refractive index determines the location of the optical cavity.
     
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